444 
PALEONTOLOGY OF ILLINOIS. 
one narrow medial nerve, and striated in the length with well 
marked parallel regular lines, nearly as strong as the medial 
nerve. The pedicels of the sporanges are still curved as in 
their normal position on the strobile, and appear linear. 
This species is distinct from every other kind published, by its striated blade. 
Also from Mazon creek; in concretions of clay iron ore. 
Lepidopiiyllum foliaceum, Sp. nov. 
PL xxxi, fig. 10. 
This leaf or blade has a form totally at variance with any 
other seen in the Coal Measures, and it is doubtful whether 
it represents a kind of vegetable organ, like those described 
under this generic name. It is marked in the middle by an 
inflated body (medial nerve ?) one-tenth of an inch broad, 
which, at its base, is abruptly curved on one side like a spo- 
range pedicel of Lepidopiiyllum at its point of union with the 
blade. This medial nerve,? slightly enlarging upwards, ab¬ 
ruptly terminates at some distance under the obtuse point of 
the blade. The whole leaf is a little more than one inch long, 
half an inch broad, oblong-ovate in outline, cut or truncate at 
the base, with a small round lobe on one side of it, and split 
at the top in two or three deep, narrow, obtuse lobes Its sur¬ 
face is smooth, covered all over by a pellicle of coaly matter; 
the medial broad nerve only is naked and obscurely striate in 
its length. 
On a piece of shale from the main coal of Marphysborough, 
I have lately received from Mr. S. S. Strong, and from the shales of Morris, 
another specimen of this species, representing an agglomeration of three leaves 
of the same kind and form as the one above described. The point and mode 
of connection of these leaves is not distinguishable, though they appear to be 
imbricated around a common axis. 
